EP3965120A3 - Debris filters for nuclear fuel assembly and method of using the same - Google Patents

Debris filters for nuclear fuel assembly and method of using the same Download PDF

Info

Publication number
EP3965120A3
EP3965120A3 EP21202545.6A EP21202545A EP3965120A3 EP 3965120 A3 EP3965120 A3 EP 3965120A3 EP 21202545 A EP21202545 A EP 21202545A EP 3965120 A3 EP3965120 A3 EP 3965120A3
Authority
EP
European Patent Office
Prior art keywords
excisions
plates
debris
filters
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21202545.6A
Other languages
German (de)
French (fr)
Other versions
EP3965120A2 (en
Inventor
Brandon P. Smith
Carlton W. Clark
Richard C. Longren
LATTER (WILM), Gerald M
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global Nuclear Fuel Americas LLC
Original Assignee
Global Nuclear Fuel Americas LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global Nuclear Fuel Americas LLC filed Critical Global Nuclear Fuel Americas LLC
Publication of EP3965120A2 publication Critical patent/EP3965120A2/en
Publication of EP3965120A3 publication Critical patent/EP3965120A3/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/3206—Means associated with the fuel bundle for filtering the coolant, e.g. nozzles, grids
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/28—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core
    • G21C19/30—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps
    • G21C19/307—Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core with continuous purification of circulating fluent material, e.g. by extraction of fission products deterioration or corrosion products, impurities, e.g. by cold traps specially adapted for liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/247—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
    • B01D46/249—Quadrangular e.g. square or diamond
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
    • G21C3/3305—Lower nozzle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Filtering Materials (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Debris filters fit in fuel assembly lower tie plates and filter fluids passing therethrough. Filters use a series of adjacent plates with aligned peaks and valleys to create several channels. The plates have small excisions in diamond, triangle, or other debris-catching shapes, such as near a lower portion of the filter where fluid enters the filter. Excisions may alternate around each channel, such as four alternating cut-outs in 90-degree intervals about a channel circumference. Excisions may be sized to entrap smaller debris common in reactor coolant flow and liable for fretting damage to fuel cladding. Multiple vertical stages can be used in filters, with different channels for each stage. Ligaments may hold each stage to the next, potentially with a gap between stages for intermixing. Plates, peaks, valleys, ligaments, and excisions may all be formed in a single stamping operation to eliminate excess or overlapping pieces or extensions.
EP21202545.6A 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same Pending EP3965120A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/687,712 US10923237B2 (en) 2017-08-28 2017-08-28 Debris filters for nuclear fuel assembly and method of using the same
EP18190955.7A EP3451345B1 (en) 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP18190955.7A Division-Into EP3451345B1 (en) 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same
EP18190955.7A Division EP3451345B1 (en) 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same

Publications (2)

Publication Number Publication Date
EP3965120A2 EP3965120A2 (en) 2022-03-09
EP3965120A3 true EP3965120A3 (en) 2022-06-29

Family

ID=63491397

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21202545.6A Pending EP3965120A3 (en) 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same
EP18190955.7A Active EP3451345B1 (en) 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18190955.7A Active EP3451345B1 (en) 2017-08-28 2018-08-27 Debris filters for nuclear fuel assembly and method of using the same

Country Status (4)

Country Link
US (2) US10923237B2 (en)
EP (2) EP3965120A3 (en)
JP (2) JP7199176B2 (en)
ES (1) ES2904357T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11437154B2 (en) * 2017-12-28 2022-09-06 Joint-Stock Company “Tvel” Nuclear fuel assembly having a filter for retention of foreign objects in the coolant
FR3140704A1 (en) * 2022-10-07 2024-04-12 Framatome Debris filter for nuclear fuel assembly bottom tip with variable deflection passages

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JP2005172748A (en) * 2003-12-15 2005-06-30 Global Nuclear Fuel-Japan Co Ltd Foreign matter filter for reactor and fuel assembly
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JP2012117921A (en) * 2010-12-01 2012-06-21 Global Nuclear Fuel-Japan Co Ltd Multistage-type foreign matter filter

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Also Published As

Publication number Publication date
EP3451345B1 (en) 2021-12-29
US12106864B2 (en) 2024-10-01
EP3965120A2 (en) 2022-03-09
US20190066854A1 (en) 2019-02-28
EP3451345A1 (en) 2019-03-06
JP2023027320A (en) 2023-03-01
JP7445738B2 (en) 2024-03-07
US20210287812A1 (en) 2021-09-16
US10923237B2 (en) 2021-02-16
ES2904357T3 (en) 2022-04-04
JP2019070636A (en) 2019-05-09
JP7199176B2 (en) 2023-01-05

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